Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer Q, Grade 1. S-P17; KM-9; Cal-770. 12.39 grams. Solid coin with good full cross and shield, practically no corrosion, lightly toned, the assayer barely visible due to minor localized doubling. With Fisher photo-certificate 85A-261725 (tag missing). From: Atocha, sunk in 1622 west of Key West, Florida
($1000-1500)